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Frigicoll Kaysun KEM-90 DRS4 Engineering Data Book

Dc inverter air-cooled modular chiller
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ENGINEERING DATA BOOK
DC Inverter Air-cooled Modular Chiller
KEM-90 DRS4
IMPORTANT NOTE:
Thank you very much for purchasing our air conditioner,
Before using your air conditioner, please read this manual carefully and keep it for
future reference.

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Summary of Contents for Frigicoll Kaysun KEM-90 DRS4

  • Page 1 ENGINEERING DATA BOOK DC Inverter Air-cooled Modular Chiller KEM-90 DRS4 IMPORTANT NOTE: Thank you very much for purchasing our air conditioner, Before using your air conditioner, please read this manual carefully and keep it for future reference.
  • Page 2 CONTENTS Part 1 General Information ................3 Part 2 Engineering Data ................11 Part 3 Installation and Field Settings ............23...
  • Page 4 Part 1 General Information 1 System introduction ..................4 2 Product Lineup .....................7 3 Unit Combinations ..................8 4 System Design And Unit Selection .............9...

  • Page 5: System Introduction

    1 System introduction 1.1 System Schematic Aqua thermal is an integrated air-to-water space heating and space cooling heat pump system. The outdoor heat pump system extracts heat from the outdoor air and transfers this heat through refrigerant piping to the plate heat exchanger in the hydronic system.
  • Page 6 1.2.2 Space Cooling And Heating Through Fan Coil Unit Expansion tank Water replenishment valve Water discharge valve Master unit Y-type filter, unit requiring≥ 16 mesh Differential pressure by-pass valve unit Drain valve Slave unit Two-way valve Max 16 units Auxiliary electric heater Three-way valve Legend Stop valve...
  • Page 7 1.2.3 Space Heating Through Floor Heating Loops and Space Cooling Through Fan Coil Unit Expansion tank Water replenishment valve Water discharge valve Master unit Y-type filter, unit requiring≥ 16 mesh Differential pressure Floor Floor Floor by-pass valve Heating Heating Heating Loops Loops Loops...

  • Page 8: Product Lineup

    2 Product lineup Model KEM-90 DRS4 Power supply 380-415V/3Ph/50Hz Appearance...

  • Page 9: Unit Combinations

    3 Unit Combinations System Capacity (kW) Numbers of units Modules ● ●● ●●● ●●●● ●●●●● ●●●●●● ●●●●●●● ●●●●●●●● ●●●●●●●●● ●●●●●●●●●● ●●●●●●●●●●● 1080 ●●●●●●●●●●●● 1170 ●●●●●●●●●●●●● 1260 ●●●●●●●●●●●●●● 1350 ●●●●●●●●●●●●●●● 1440 ●●●●●●●●●●●●●●●●...

  • Page 10: System Design And Unit Selection

    4 System Design And Unit Selection 4.1 Selection Procedure Step 1: Total heat load calculation Calculate conditioned surface area Select the heat emitters (type, quantity, water temperature and heat load) Step 2: System configuration Decide whether to enable or disable auxiliary electric heater Step 1: Total heat load calculation Determine required total heat load on outdoor units Set capacity safety factor...
  • Page 11 4.2 Modular Chiller Leaving Water Temperature (LWT) Selection The recommended design LTW ranges for different types of heat emitter are: „ For floor heating: 30 to 35⁰C „ For fan coil units: 30 to 45⁰C „ For low temperature radiators: 40 to 50⁰C 5.3 Optimizing System Design To get the most comfort with the lowest energy consumption with Aqua thermal, it is important to take account of the following considerations:...

  • Page 12: Table Of Contents

    Part 2 Engineering Data 1 Specifications ....................12 2 Dimensions And Center of Gravity ............13 3 Operating Limits ..................14 4 Capacity Tables ...................15 5 Performance Adjustment Factors .............17 6 Hydronic Performance ................19 7 Octave Band Levels..................20...

  • Page 13: Specifications

    1 Specifications Model name KEM-90 DRS4 Power supply V/Ph/Hz 380~415/3/50 Capacity Cooling Rated input 27.8 2.95 Heating Capacity Rated input 28.1 Seasonal space heating energy efficiency class (LWT at 35⁰C) Max. running current Type Finned tube Fan motor type DC motor Air side heat exchanger Fan motor rated input Fan motor quantity...

  • Page 14: Dimensions And Center Of Gravity

    Notes continued 5. Outdoor ambient temperature 35°C DB. EWT 12°C, LWT 7°C Sound pressure level is the test average measured in a semi-anechoic chamber. The test position is 1m right in front of the unit for four sides and (1+H)/2m (where H is the height of the unit) above the floor. During in-situ operation, sound pressure levels may be higher as a result of ambient noise.

  • Page 15: Operating Limits

    3 Operating Limits 3.1 Cooling operating range Notes: Normal mode  Low leaving water temperature mode  Low leaving water temperature mode can be set through wired controller, please refer to the Operation Manual for details. If low leaving water temperature function is effective, the operation range will extend to the red frame above. When the set temperature is less than 5°C, antifreeze liquid (concentration above 15%) should be added in the water system, otherwise the unit will be damaged.

  • Page 16: Capacity Tables

    4 Capacity Tables 4.1 Heating Capacity Tables 43.9 21.7 42.7 24.8 39.7 26.6 55.8 23.4 53.6 25.9 51.0 27.6 45.8 26.9 72.4 24.2 70.2 26.2 68.0 28.6 64.1 30.6 48.0 28.0 88.3 26.6 86.3 26.4 84.9 28.8 81.5 31.3 70.0 32.1 59.9 33.3 98.3 22.7 95.4 24.1...
  • Page 17 4.2 Cooling Capacity Tables 75.1 13.3 80.3 13.6 83.8 13.8 92.5 14.2 75.8 18.6 80.8 17.2 84.0 16.4 92.3 14.2 75.9 16.0 80.8 16.1 84.1 16.2 92.3 16.4 76.6 15.2 81.0 16.2 84.0 16.9 91.3 18.6 75.8 17.4 81.3 14.4 84.1 14.8 91.1 14.6 79.1 16.6...

  • Page 18: Performance Adjustment Factors

    5 Performance adjustment factors 5.1 Ethylene and Propylene Glycol factors The antifreeze must be required according to anyone condition as following: „ The ambient temperature is below 0 ⁰C; „ Don’t start up the unit for a long time. „ The power supply was cut off and needn’t change the water in system. A glycol solution is required when the unit with condition as mentioned.
  • Page 19 Other terms used in the literature to describe fouling include: deposit formation, encrustation, crudding, deposition, scaling, scale formation, slagging, and sludge formation. The last six terms have a more narrow meaning than fouling within the scope of the fouling science and technology, and they also have meanings outside of this scope; therefore, they should be used with caution.

  • Page 20: Hydronic Performance

    6 Hydronic Performance Water flow rate (m...

  • Page 21: Octave Band Levels

    7 Octave Band Levels Test bearing Side Two Side Three Side One Electric control box Side Four Test condition: Outdoor ambient temperature 35°C DB. EWT 12°C, LWT 7°C NR-90 NR-80 NR-70 NR-60 NR-50 NR-40 NR-30 NR-20 NR-10 NR-0 31.5 1000 2000 4000 8000...
  • Page 22 Part 3 User Interface Field Settings 1 User Interface Field Settings ..............21...
  • Page 23 1 User Interface Field Settings 1.1 Introduction During installation, the unit’s settings and parameters should be configured by the installer to suit the installation configuration, climate conditions and end-user preferences. The relevant settings are accessible and programmable through the PROJECT menu on the wired controller’s user interface. KCCHT-06 MODBUS Icon Function...
  • Page 24 1.2 PROJECT MENU 1.2.1 Structure For PROJECT Menu SET UNIT-AIRCONDITIONING 1. SET UNIT-AIRCONDITIONING SET PARALLEL UNIT TWO_COOL_DIFF SET UNIT PROTECTION TWO_HEAT_DIFF SET DEFROSTING SET E9 TIME INV PUMP RATIO CHECK PARTS 2.SET PARALLEL UNIT TIM_CAP_ADJ TW_COOL_DIFF TW_HEAT_DIF RATIO_COOL_FIRST RATIO_HEAT_FIRST 3. SET UNIT PROTECTION T_DIFF_PRO TWI_O_ABNORMAL 4.
  • Page 25 1.2.2 Project Menu MENU > Project Menu Project Menu allows installers to input the system configuration and set the system parameters. Enter the password, using ◄ ► to navigate between digits and using ▼ ▲ to adjust the numerical values, and then press OK. The password is 9877. The following pages will be displayed after putting the password.
  • Page 26 TW_COOL_DIFF sets the minimum temperature difference between the total leaving water temperature (Tw) and the total leaving water set temperature (TwS) above which the unit will start for cooling mode. When Tw - TwS ≥ TW_COOL_DIFF + 1, unit starts. When TwoS - Tw ≥ 2 lasts for 5s, unit stops. TW_HEAT_DIFF sets the minimum temperature difference between the total leaving water temperature (Tw) and the total leaving water set temperature (TwS) above which the unit will start for heating mode.
  • Page 27 1.2.7 SET E9 TIME MENU > Project Menu > SET E9 TIME E9 PROTECT TIME sets the delay time of water flow detection. When unit starts, water flow will not be detected until at least (2+ E9 PROTECT TIME/60) minutes have elapsed. E9 DETECTION METHOD sets the method of water flow detection.
  • Page 28 1.3 Parameters setting Menu Parameters Setting range Default value Adjustment range TWO_COOL_DIFF 1°C~5°C 2°C 1°C TWO_HEAT_DIFF 1°C~5°C 2°C 1°C TIM_CAP_ADJ 60~360s TW_COOL_DIFF 1°C~5°C 2°C 1°C TW_HEAT_DIFF 1°C~5°C 2°C 1°C RATIO_COOL_FIRST 0~100% RATIO_HEAT_FIRST 0~100% T_DIFF_PRO 8~15°C 12°C 1°C Project menu TWI_O_ABNORMAL 1~5°C 2°C 1°C...

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